Methodology for designing a hydraulic hybrid transmission from real world drive data

Brent E Warr, Purdue University

Abstract

The objective of this work is to investigate a proposed new method for component sizing of a hydraulic hybrid vehicle. A thorough investigation of traditional sizing method derived from hydrostatic sizing is reviewed. The proposed method consists of a drive data collection for a targeted application. A collection of Class 4 parcel delivery vehicle drive data was organized and executed. A tool was created to assist in the drive data sizing methodology, which is called Drive Data Analysis Tool (DDAT). The tool described automates functions to extract critical parameter from drive data and provide suggested sizing for the system. New indicators for percentage of brake energy in driving routes were formulated in the proposed sizing method. The drive data collected and the DDAT program were utilized in creating a representative drive cycle, which proves useful in other methods of sizing and control that are more computationally expensive. The proposed method is compared to the traditional method of sizing and the proposed drive data methodology is shown to provide insight for energy storage sizing techniques and component interaction in the system. The proposed methodology also provides increased accuracy to operational points of the vehicle when compared to traditional performance requirements.

Degree

M.S.M.E.

Advisors

Ivantysynova, Purdue University.

Subject Area

Automotive engineering|Mechanical engineering

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